Hi all. I'm trying to improve the authenticity of my medieval calligraphy display and was wondering if anyone can suggest where I can get some decent animal hair paintbrushes from? Please note that I don't want to get into a discussion about authenticity e.g. use of vellum and proper preparation of parchment etc, which I know is a pet hate of some folk on here. I'm just looking for advice on suppliers (if there are any!) of reasonably authentic brushes for the early- middle medieval period.thanks.